Generic battery model - State of Charge

Hello everybody,

I want to use the Simulink Simscape Power Systems Battery from the "Electric Drives/Extra Sources" libarypath. To understand the model I would like to get to know why there is a gap between the "Initial state-of-charge" I write in the block parameters and the measured state-of-charge (SOC) at the beginning of the simulation. At 20 % initial SOC the measured SOC is something around 17.28 % and at 90 % intial SOC it measures 89.66 %.

Is there anyone who had the same question and solved it for himself or is anybody able to help me?

[essam nabil]

Hello Samuel Tepe,

Woud you please send me your mail. Thanks

Answer 1

[Zhao Wang]

I understand that you observed the initial SOC that is different from the settings in the Battery block in the Simscape Power Systems toolbox. Based on the situation you described, I assume that you are using MATLAB R2016a or R2016b. This issue appears to be caused by a bug of the Battery block in these releases. In a more recent version of MATLAB, such as MATLAB R2017a, the initial SOC should be correct.

[Samuel Tepe]

Thanks, that safes me a lot of time.